Theatre Solution Lecture Seating Equa 2 - Manual (Page 2)

Equa 2 Lecture Seating Specifications
Page 2 of 5
the bid date.
1. By offering a quote for this project, the bidder assumes full responsibility for complying with the
specifications for this project and shall be totally responsible for any expenses incurred if the
product quoted does not comply with the specifications.
C. Failure to comply with the warranty described in Part 4 of these specifications will be cause for
disqualification.
2.2 MATERIALS
A. Padding material shall be flame retardant polyurethane foam which conforms to the standards of the
California Bureau of Home Furnishings 117-75.
B. Seating fabric shall be _______________________________________________ with the color to be
selected from the standard choice of colors. All upholstery shall be first quality without creases, stretch
lines, or wrinkles.
2.3 FABRICATION, GENERAL
A. Fabricate the seating and tables for maximum comfort using materials that are carefully selected to be free
from defects, objectionable projections, or irregularities. Smooth round corners and edges to present the
least possible snagging and pinching hazards.
2.4 MOUNTING
A. Fabricate seat/table supports for floor attachment.
2.5 SEAT/TABLE SUPPORT
A. Table Stanchion: Shall be a weldment consisting of a base plate and leg tube. The base plate is to be
fabricated of 1/4” cold-rolled steel into an 8” x 8” square and is to include (4) countersunk holes for floor
mounting. The leg tube is to be cut from 11 gauge x 3” x 3” welded steel tubing. Parts are to be MIG
welded into a 110 degree diagonal orientation.
B. Adjustable Top Mounting Plate: The adjustable top mounting plate is to be formed from 13 gauge cold-
rolled steel and is to include (6) holes for fastening to table surface and four elongated slots for fastening to
the Table Stanchion.
C. Arm Return Mechanism: Shall be an integral component of the table stanchion, consisting of the following
machined cold-rolled steel components: (1) 5/16” thick bearing plate, (1) 1/4” thick support plate, (1) 3/4”
thick support gusset, (1) 5/16” thick top plate, (1) 3/4” thick open stop, and (1) 3/4” thick closed stop. All
components shall be fixtured to produce specified functional chair-stop locations and MIG welded. All weld
splatter and metal burrs shall be removed to insure unobstructed operation.
D. Swing Arm: Shall be a weldment consisting of the following components: (1) welded steel cylinder tube,
internally reamed to accept a tapered cylinder, (1) 1035 steel .75” diameter axle, and (1) tube arm of the
specified length cut from 14 gauge x 1” x 3” welded steel tubing. The cylinder tube shall be welded closed
at the bottom end with a steel plate containing a threaded hole to receive an adjustment bolt that will
provide ease of removal and adjustment of the chair cylinder.
E. Seat/Table Support Assembly: Shall be a mechanical assembly consisting of (1) table stanchion, (1)
adjustable top mounting plate, (1) arm return mechanism, (1 or 2) swing arms, (1) 1/2” thick steel top
retaining plate, (1 or 2) 17-7 stainless steel torsion springs, and (1) cast aluminum protective cover. All
parts shall be assembled to careful tolerances with Grade 5 machine screws and lock washers. Spring
tension is to be calibrated to insure consistent silent return of the swing arms to the closed position without
the need of excessive force which may cause leg fatigue in the seated occupant. Open and closed stop
positions shall be cushioned with urethane rubber to insure silent operation. Single chair assemblies are to
include fitted blank cover in the place of the second swing arm location.
2.6 CHAIRS
A. Chair shall be Herman Miller model Equa 2
® .
B. Chairs shall have a one piece seat and back shell constructed of injection molded, glass reinforced
thermoplastic polyester.
C. Fully-upholstered chairs shall have a shell fully encapsulated by injection molded cold-cured polyurethane
foam. The foam shall be a nominal 1-1/2” thick on the seat and back and shall have waterfall edges. The
foamed shell shall be fully upholstered from among a variety of fabrics that shall be bonded to the foam in
contoured areas of the seat and back.
D. The split-pad upholstered chair shall have separate seat and back cushions of injection molded, cold-cured
polyurethane foam over a polypropylene inner shell. The foam shall be a nominal 1-1/2” thick on the seat
and back and shall have waterfall edges. The cushions shall be upholstered from among a variety of
fabrics that shall be bonded to the foam in contoured areas of the seat and back. The cushions shall be